Relay.



nemvnnenn P.

WILLIAMS AND JOHN F. WILLIAMS,

or NEW "roars. 1 "r.

RELAY.

Specification of Letters Patent.

Patented Aug. 2% eerie.

Application filed January-25, 1917. Serial it o. I l- ,432.

1 i; aZZ whom it may concern:

Be it known that we, DELAVERGNE P. W111- nuns and JOHN F. iVILLIAMs, citizens of the United States, and residents of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Relay of which the following is a full, clear, and exact descriprice.

invention relates to electric relays for up in one circuit electric impulses clei -hrough another circuit.

The invention has for its general objects to improve the construction and operation of devices of liable and 'eliicient in use, comparatively simple and inexpensive to manufacture, and

so designed as to possess a maximum sensitiveness.

A more specific object of the invention is the provision of a novel form of diaphragm and means for mounting the same whereby the diaphragm is undamped as its peripheral edge is supported free, as distinguished from thoserlinphragms which are clamped entirely around their peripheral edge in the body or a receiver or transmitter.

Another object of the invention is the provision of a novel arrangement of energizing electromagnetic means and niicrophonic means for obtaining a maximum conversion of electric impulses in one circuit derived from another circuit.

\Vith such objects in view, and others which will appear as the description proceeds, the invention comprises various novel features of construction and arrangement of parts which will be set forth with partie ularity in. the following description and claims appended hereto.

i n the accompanying drawings, which illustrate certain en'i'ooduncnts of the inven tion and wherein similar characters of reference indicate corresponding parts in all the views,

Figure l is a bottom plan view of the rewith the bottom of the casing removed Fig. 2 is a vertical section on the line 2-2, Fig. 1;

Fig. 3 is a diagrammatic view of circuit connections illustrative of one use of the reiay; I

Fig. a detail sectional view of one of the microphones;

Fig. 5 a vertical sectional view of a modified 01111 of rel ay this character so as to be rc-' Fig. 6 is a sectional view of another modified form; and

Fig. 7 is a plan view of ment shown in Fig. ti.

Referringto the drawing, A designates a case of any suitable construction in which is mounted a vibratory element or diaphragm 1 that is set into vibration by electromagnets 2 and 3 disposed respectively above and be low the diaphragm andjat opposite sides of the center thereof, these electronic-gusts being adjustably mounted on horizontal brackets 4 and 5 fastenedwithin the casing. The diaphragm is supported at diametrically opposite points and adjacent the periphery by microphones 7 and 8 which are respectively mounted on the brackets at and rent impulses in the energizing circuit in which the electromagnets are included set up vibrations in the undamped diaphragm 1, which vibrations .are communicated to the microphones that in turn cause curr nt impulses to flow through the circuit or circuits in which they are connected.

A simple circuit arrangement is shown in Fig. 3, wherein the el cctromagnets 2 and 3 are connected in series with a source of current 9 and a transmitter 10. The microphones 7 and 8 are'in series with each other the diaphragm eleand with a battery '11 and receiver 12. The

, diaphragm of the trans mitter 10 is exposed set up current impulses in the magnets 2 and 3 wh ch vibrate the diaphragm l, and this vibration varies the eiec- 'trical resistance, through the microphones and causes current impulses to be sent sounds to which the 5. The eurthrough the receiver 12. As the diaphragm is supported only at two points it is free to respond to the slightest magnetic influences of the electromagnets, and these eiiects will be multiplied in the energizing circuit which contains the microphones and receiver. The microphones are insulated from their supporting brackets and diaphragm and the op posits terminal members 1% and let thereof are connectfed'ni the receiver circuit.

In the modification shown in Fig. 5 the diaphragm element 1 is a strip of metal bent approximately into the form of an 55, and the ends 15 and iii are clamped to the yokes or brackets 17 and 18 by the same means which fasten the magnets 19 and 20. 'The microphones 21 and 22 are connected ,adjacent the middle of the vibratory element 1, and the electromagnets act thereon at points outwardly from the microphones.

In the construction shown, in Figs. 6 and 7 a the diaphragm l" is an approximately. rectangular plate which has slots 23 and 2i at its endsi'or adjustable connection with the microphones25 and 26, which are shown on the same side of the diaphragm element. One or more electromagnets 27 are disposed in magneticfrelation to'the diaphragm element '1, and like the microphones it is adconnection with Patent:

justably mounted onthe yoke or supporting I frames 28.

From the foregoing description taken in the accompanying drawings, the advantages of the construction and method of operation will be readily under stood by those skilledin the art towhich and while we have the invention appertains, described the principle of operation, together with the device which we now consider to be the best embodiment thereof, we desire to have it understood that the device shown is merely illustrative and that such changes may be made when desired as fall within the scope ofthe appended claims.

Having thus claim as new and desire to secure by Letters 1. A. device of the class described comprising a diaphragm element, a plurality of microphones mechanically connected therewith, with the marginal portion of the ele ment unsupported and free, and electromagnetic means for setting the diaphragm into vibration.

2. A. relay comprising a diaphragm element supported at widely spaced points and having the major portion of its margin unsupported and tree to vi rate, Inicrophonic means operatively related to the diaphragm to be acted on thereby, and electromagnetic means for setting the diaphragm element into vibration.

I plurality described. our invention, we

, phragm,

3. A relay comprising a diaphragm, a

of microphonic means mechanically connected withand supporting the diaphra'gm, a circuit in which the said means are connected in series, an electromagnetic means for setting thediaphragm into vibrationi and an energizing circuit in which the electromagnet is included.

4..A relay comprising a diaphragm, a

so I

plurality of mlcrophonic means. mechani- 6. The combination of an nndamped diaphragm, a plurality of microphones connected therewith at opposite sides of the center, a plurality oi electromagnets acting on the diaphragm at opposite sides of the center,

and means on which the microphones and electromagnets are adjustahly mounted.

7. The combination of an undamped diaa plurality of microphones connected therewith at opposite sides of the center, a plurality of electromagnets acting on the diaphragm at opposite sides of the center,

a receiver circuit in which the microphones are connected 1n series, and a transmitter circuit in which the electromagnets are connected in series.

DELAVERGNE P. WILLIAMS. JOHN F. WILLIAMS. 

